Can you identify this centerfire cartridge? ***answer revealed***

[Monadnock]

I know what it is ...basically. I got a little background story to go along with it. I also know that it will fire and cycle in a RRA A4 Varmint AR15. I have certainly never seen one in-the-wild though. I was going to place this in the "Ammunition" thread, but it's really not a "serious" question, so I figured General Discussion would cover it.

As you can see, the cartridge below it is a 5.56 x 45 cartridge that many of you have seen. So, it's fairly obvious that the brass is very similar. So similar in fact, that the same 5.56/.223 brass is used for the cartridge.

I will tell you that it is more than 25 years old.

When I think that enough folks have taken a shot at it, I'll tell you what's stamped on the brass.

 

[FPrice]

.22-250?

 

[kingson]

It is a 17 Remington

 

[CRSIII]

.117 bee?

 

[matt]

not sure, but when I see it I think "coyote"...

 

[Larry Legend]

not sure, but when I see it I think "coyote"...

I can only imagine if that were a JHP, a projectile that small, traveling that fast, would most definitely tear apart a small animal.

 

[Zappa]

It is a 17 Remington

I agree.
.17 Remington was made from a necked down .223 (also Remington)

 

[meth0d]

.17 fireball?

 

[swampy]

.17 SBR

 

[center442]

.17-223 ?

 

[Coyote33]

19-233 CALHOON ?

L to R: 19 CALHOON, 17 Rem, 19-223 CALHOON, 223 Rem, 22 Hornet

 

[Monadnock]

No ...no one's hit on it yet.

And remember ...it's at least 25 years old.

Hint: No one has the exact diameter yet.

 

[CRSIII]

17-222

 

[PSS]

rem 222

 

[whtmtnhiker54]

5.56x30?

 

[06LemansC6]

17 Rem

 

[Monadnock]

Nope ...nuthin' yet.

I'm going to let this run for a while.

Let some of the gaffers sniff at it.

 

[ironweld7]

14/222
let me be more specific 14/222 eichelberger

 

[ScottS]

.17 Mach IV?

 

[CRSIII]

not sure, but when I see it I think "coyote"...

Quickly followed by ''throat errosion''

 

[ShadeWPI]

A .20 Tactical?

 

[97serpent]

.17-222 Magnum?

 

[Keystone]

Well, I have no guesses that haven't already been said, but I DID find this insane thing while reading around:

17-357 RG

 

[Taipan01]

Maybe a 20 Practical, seems a bit large though. Possibly the old 70's .19 Calhoon Hornet

 

[PatMcD]

It's not the .17 Flintstone Super Eyebunger (no joke) because that's a 22-250 necked down to .17

All I can think of is maybe a .17 Wolfe (.17/223) or a 5mm Forker (5mmm/223).

 

[dhuze]

I know what it is in the back of my mind. There is a guy at my range who shoots it. He buys my IMI .223 brass from me because he says it's the best brass to neck down for it. He shoots a lot of wildcat calibers.
I believe it's somewhere in the .14 caliber range. He told me he has had it over 4000 fps, but the bullet disintergrates at that speed. I'm still going with a .14 something.

 

[Devils Paintbrush]

How about a .220 swift?

Nope, can't be, .220 is too long.

Ok, I am going to go with the .221 fireball.

 

[Mike-Mike]

Well, I have no guesses that haven't already been said, but I DID find this insane thing while reading around:

17-357 RG

That thing must come out of there "Wicked"

 

[Jayvs]

I agree with ShadeWPI. Is it a 20 tactical

 

[center442]

Maybe a 20 Practical, seems a bit large though. Possibly the old 70's .19 Calhoon Hornet

I thought that at first, but the OP says it's been around for 25 years, and I thought the 20 Practical was a lot newer then that.

It looks too big to be a .17 caliber, and it seems smaller than a .22 caliber, so I'm guessing that it has to be about a .20 cal.

The suspense is killing me!